Philips Semiconductors

PHP/PHB/PHD82NQ03LT

TrenchMOS™ logic level FET

Product data

Rev. 01 — 28 March 2002

4 of 14

9397 750 09308

© Koninklijke Philips Electronics N.V. 2002. All rights reserved.

4.

Thermal characteristics

4.1 Transient thermal impedance

Table 3:

Thermal characteristics

Symbol Parameter

Conditions

Min Typ Max Unit

-

-

1.1

K/W

thermal resistance from junction to ambient

SOT78 package; vertical in still air

-

60

-

K/W

SOT428 package;

SOT428 minimum footprint;

mounted on a PCB

-

75

-

K/W

SOT404 and SOT428 packages;

SOT404 minimum footprint;

mounted on a PCB

-

50

-

K/W

Fig 4.

Transient thermal impedance from junction to mounting base as a function of pulse duration.

03ai54

10-3

10-2

10-1

1

10

10-5

10-4

10-3

10-2

10-1

1

10

tp (s)

Zth(j-mb)

(K/W)

single pulse

δ = 0.5

0.2

0.1

0.05

0.02

tp

tp

T

P

t

T